Improvement in drill-rod attachments



UNITED STATES PATENT OFFICE.

B. S. TORREY, OF BANGOR, MAINE.

IMPROVEMENT lN DRILL-ROD ATTACHMENTS.

Specification forming part of Letters Patent No. 50, 85E-dated November 7, 1865.

To all whom it may concern:

Be it known that I, B. S. TORREY, ot' the city of Bangor, county of Penobscot, and State ot' Maine, have invented a new and useful Improveinent in 'leinper Bar and Screw for Drilling Purposes; and I do hereby declare that the following is a clear and exact description of the saine, reference being had to the accompanying drawings,mal;ing part of this specification.

Figure l is a side view oi' temper-bar, handwheel. thumb-latch, wing-swivel, and clamps. Fig. 2 is a side view of temper-bar, brace-bars, section of hand-wheel, thumb, wing-swivel, and clamps. Fig. 3 is a pla-n ot' brace-bars at the line A A, Fig. 2. Fig.4 is a sectional view of the ing-swivel, showing thumb-latch. Fig. 5 is a plan ot wing-swivel. Fig. 6 is a side elevation et' brace-bar. Fig. 7 is a view of temper-screw, with hand-wheel, showing ratchethead. Fig. S is a view ot' socket-wrench.

This invention consists in so forming or constructing a temper bar or screw t'or drilling purposes, and in so providing said temper-bar with hand wheel, wing-swivel, and thumblatch as .to facilitate the tempering and jar of drill, so as to render the machine more certain und et't'ective in the action.

To enable others skilled in the art to make and use myinvention, I will proceed to describe its construction and operation.

To the eye D, Figs. l and 2, is suspended temper-bar A, temper-screw E, and clamp L. The upper end ot' temper screw E passes through abrace-bar, B, which I Ieeps it rm and steady. Brace-bar B, Fig. 2, is guided by the inside ot' temper-bar A, Figs. l and 2, which it is made to lit without lateral play, and which serve as slides or guides. This brace-bar B is bent at a suitable angle, and is made secure to wing-swivel G, Figs. l and 2, which has a thumb-latch, t', Figs. 2 and 4, with a suitable spring,J,Figs. l and 4, to'keep it in its proper place, made also in such a manner as to operate in and hold temper-screw E, Figs. 1, 2, and 7, by the aid ot ratchet-head K, Figs. 1,2, and 7, at the lower end of said temper-screw E. Therefore, when thumb-latcht' is in ratchethead K, it secures the screw E from turning either way until thumb-latch i is released, so that the brace-barB does away with the ordinary jam-nut. A hand wheel, F, Figs. l, 2, and 7, is also attached to temper-screw E, just above wing-swivel Gr, by a pin passing through the hub ofthe same, making the screw E and hand-wheel F, as it were, one piece. The temper-screw E is t'ed down bythe hand-wheel F, and is run back by a socket-wrench, O, Fig. 8, placed on square L, below ratchet-head K, at the end of temper-screw E. Glam ping the ro'pe is done by the ordinary clamps, L I.

Operation: In order to illustrate the inanner in which the several before described parts operate, we will suppose the machine to be in regular operation. When temper-screw E, Fig. l, is extended it is required to run it bach, which is done by placing socket-wrench O, Fig. S, on square below wing swivel G. Now, to t'eed down the drill, you release the thumb-latch i, Fig. 2, and turn the hand-wheel F as much as required. This being done, the thumb-latch I', Figs. 2 and 4, holds temperscrew E iirin and secure. The brace-bar` B, Figs. 2 and 6, being secured to wing-swivel G, Figs. 2, 4, 5, and 6, at one end, and attached to temper-screw E at the other end, holds temper-screw E from working down while in operation, doing away with jam-nut now used.

What I claim as new, and desire to secure by Letters Iatent, is-

1. The brace-bar B, Fig.6, or its equivalent, which connects the temper-screw E with wingswivel G,Fig.2,doing away with jam-nut, substantially as set forth, for the purpose described.

2. Thehand-wheel F, Fig. 7, in combination with screw E and ratchet-head K, Fig. 7, as herein described.

3. The wing-swivel G, Figs. 4 and 5, and thumb-latch i, Fig. 4, which makes the whole thing secure while the machine is in operation,

.the whole operating in the manner and for the purpose set forth.

R. S. TORREY.

Witnesses: R. D. O. SMITH,

EDM. F. BROWN. 

